Automatic feed-regulating float for centrifugal separators.



G. A. BDLUND, DEGD. H. EDLUND, ADMINISTEATRIX a; J. noun, ADMINISTRATOR, m: BORIS 1:01;. AUTOMATIC FEED REGULATING FLOAT FOR CENTRIFUGAL SBPARATORS.

APPLIUATION FILED DEC. 22, 1908. RENEWED NOV. 9, 1908- 91 6,398. Patented Mar. 23, 1909.

UNITE STATES PATENT. OFFICE;

HANNA EDLUND, OF PROVIDENCE, RIIODE ISLAND, ADMINISTRATRIX OF CLAL'S A. EDLUND, DECEASED; JOHN DORAN ADMlNlsTltATOR DE BONIS NON OF SAID CLAUS A. EDLUND, DECEASED, ,ASSIGNO R OF ONE-HALF TO EMIL BERNST' QM, OF PROYIDENCE, RHODE ISLAND.

AUTOMATIC FEED-REGULATING ZELOAT FOR CENTRIFUGAL SEPARATORS.

Specification of Letters Patent.

. Patented March 23, 1909.

' Application filed December 22,1906, Serial No. 349,021. Renewed November 9, 1908. Serial No. 461,807.

T01 all whom it may concern:

Be it known that CLAUS A. EDLUND, late of the city and .county of Providence and State of Rhode Island, made certain new and useful Improvements in Automatic Feed-Regulating Floats for Centrifugal Sepa- E raters, for which an application is hereby gepared, executed, and filed by l'IANNA DLUND, administratritg of the estate of the said OLAUs A. EDLUNndeceased, of which the following is a specification.

This inventionrelates to automatic feed regulating floats for centrifugal separators float t ereby obviating any effect that the same would have if it fell on the outside of the float as is customary in this class of supply controlling device.

Another feature of the invention is that the pressure. ofthe liquid is balanced against the reciprocating stem of the float as said pressure is admitted to said stem on opposite sides throu h suitable a ertures in the casing, thus a lowing theoat a free vertical movement.

.The invention consists of other novel features as will be fully described hereinafter and then pointed out in the appended claim.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification in which similar characters of reference indicate corres onding parts in all the views.

In t e drawings: Figure 1- represents the float supported in its feeder tank and the supply receptacle and su ply cock through which the liquid enters. ig. 2- is a detail 3- is a detail in elevation of the perforated bearing or casing in which the-tubular stem is adapted to work vertically.

Referring to the drawings, the milk is fed I from the supply receptac e 1 through the lug cock 2 into the feeder tank 3, whence it is designed to flow at a predetermined ,ve-

I locity' through small aperture -10 into the jcentrifugal' separating bowl belpw, not

Fig. 5

shown. In this tank 3 is located a float having a hollowstem 5 through which the milk is designed to pass. This float may be made of cork or wood, or it may be constructed hollow of metal or of any other desired material. The hollow stem 5 in this float is made in a tubular form and is held to reciprocate vertically in a bearing or casing 6 which casing is threaded at 8 into the hollow plug cock 9, said casing being slotted'at 7-7 all around its periphery to admit the liquid therethrough and balance the pressure against the reciprocating stem by admitting the liquid on all sides at once.

Slotted holes have been shown'in the casing-7 admitting the milk down through the end of the tubular stem, but holesmay also be made through the walls of the stem to register with smaller holes in the casing f or admitting the liquid, if desired.

The plug cock 9 is made hollow and is provided with a handle 11 by'which it is rotated in its casing 2 to admit the liquid therein when its aperture 12 registers with that in the inlet pipe 13.

In the operation of the device when it is desired to admit the milk from the receptacle 1 to the centrifugal bowl the handle 11 of the plug cock is turned to admit the milk into the same which at once passes through the slots 77 in the casing 6 and down through the hollow stem 5 of the float which at that time rests on the bottom 14 of the feeder tank 3, the hole in said stem registering with the outlet hole 10'. If the milk enters through the float faster than it is permitted to pass to the separator bowl below through this small aperture 10 it necessarily accu mulates in said tank and, raises the float thereby forcing upward the tube 5 in its casing and automatlcally closing the a ertures 7 thus shutting off and automatical y regulating the supplfy of milk to said tank by the position of the cat in the same. This float 1s verv simple and practical in construction and effective in its operation.

Having thus described this invention, what is claimed as new and desired to be secured by Letters Patent, is:

In a device of the character described, a supply receptacle, aplug cock by which the supply from said receptaclemay be shut ofl, a casing secured to said .cock, said casing 

